Question

( frac{d y}{d x} f x^{n}=n x^{n-1} )
( therefore x y=x^{7 / 2}=7 / 2 )
( frac{partial y}{partial x}=frac{7}{2} x^{7 / 2-1}=frac{7}{2} x^{frac{7-2}{2}}=7 / 2 x^{5 / 2} )
( frac{sin x}{frac{7 x^{5 / 2}}{2}} )

# 1. Find ay for the following (i) y = x7/2

Solution